GRIM: Fix bonewagon popping when driving in and out set tr
ALL: Update KNOWN_BUGS
GRIM: Reworked fi.lua.patchr to make it more slim
ALL: fix mac os x filename in snapshot
GRIM: Add a config option to disable ARB shaders: "use_arb_shaders", defaulted to true
DOCS: Document the use_arb_shaders option.
Merge pull request #713 from giucam/shadersoption

GRIM: Add a config option to disable ARB shaders
GRIM: Set the right type for integer registry keys
GRIM: Fix sfx volume when loading a savegame made during a movie.
GRIM: Patchr to fix the DOD door animation and duplicated sfx.
GRIM: Silence casting away const warnings
GRIM: Remove now unused _rootNode from Head
GRIM:/PATCHR Do not fall through on SEEK_END
GRIM: Remove redundant code
GRIM/Lua: Don't close the stdin and stdout files when setting them. Fix #711
GRIM: Fix background talking behaviour with Toto and Naranja in set si.
GRIM: Fix many glitches in set si. Fix #622 fix #285

Fix also Naranja stuttering when entering the set sometimes,
Toto speaking to Velasco before picking up the phone or before being towards it
and Toto not speaking anymore to Velasco after Manny screams at him.
DOCS: Fix a typo and add a missing bug description
GRIM: Do not error out when seeking backwards patchr streams.
GRIM: Make more room for walking on the right of the desk in set cf